diff --git a/keba/README.md b/keba/README.md
index d134350f..87bdbebb 100644
--- a/keba/README.md
+++ b/keba/README.md
@@ -2,11 +2,20 @@
 
 This plugin allows to control Keba KeContact EV-Charging stations. 
 
-* Enable/disable the charging stations
-* Set maximum charging current
-* Get all informations about the power supply
-* Print messages on the display
+## Supported Things
 
-nymea and the wallbox are required to be in the same network and 
-port 7090 must not be blocked by a firewall or router.
+* KeContact 
+	* Enable/disable the charging stations
+	* Set maximum charging current
+	* Get all informations e.g. voltage, current ...
+	* Print messages on the display
 
+## Requirments
+
+* nymea and the wallbox are required to be in the same network. 
+* Port 7090 must not be blocked by a firewall or router.
+* The package "nymea-plugin-keba" must be installed.
+
+## More
+
+https://www.keba.com/en/emobility/products/product-overview/product_overview
diff --git a/keba/integrationpluginkeba.cpp b/keba/integrationpluginkeba.cpp
index ae0ad441..a83dbd96 100644
--- a/keba/integrationpluginkeba.cpp
+++ b/keba/integrationpluginkeba.cpp
@@ -157,7 +157,7 @@ void IntegrationPluginKeba::updateData()
             QTimeZone tz = QTimeZone(QTimeZone::systemTimeZoneId());
             QDateTime currentTime = QDateTime::currentDateTime().toTimeZone(tz);
 
-            int minutes = (currentTime.toSecsSinceEpoch() - startTime.toSecsSinceEpoch())/60;
+            int minutes = (currentTime.toMSecsSinceEpoch()) - startTime.toMSecsSinceEpoch())/60000;
             device->setStateValue(wallboxSessionTimeStateTypeId, minutes);
         } else {
             device->setStateValue(wallboxSessionTimeStateTypeId, 0);